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Proceedings Paper

Histologic comparison of needle, holmium:YAG, and erbium:YAG endoscopic goniotomy
Author(s): Karen Margaret Joos; Jin-Hui Shen; Brian K. Rivera; Eleut Hernandez; Debra J. Shetlar
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Paper Abstract

An endoscope allows visualization of the anterior chamber angle in porcine eyes despite the presence of cloudy corneas. The pectinate ligaments in the anterior chamber angle are a surgical model for primary infantile glaucoma. This study investigated the histologic results, one month after treating the anterior chamber angle with a goniotomy needle, the holmium:YAG laser, or the erbium:YAG laser coupled to a small endoscope. The anterior chambers were deepened with a viscoelastic material in one-month-old anesthetized pigs. An Olympus 0.8 mm diameter flexible endoscope was externally coupled to a 23 gauge needle or a 300 micron diameter fiber. The angle was treated for 120 degrees by one of the three methods, and the probe was removed. During the acute study, all three methods cut the pectinate ligaments. The histologic findings one month after healing demonstrated minimal surrounding tissue damage following goniotomy with a needle and the most surrounding tissue damage following treatment with the holmium:YAG laser.

Paper Details

Date Published: 22 May 1995
PDF: 4 pages
Proc. SPIE 2393, Ophthalmic Technologies V, (22 May 1995); doi: 10.1117/12.209836
Show Author Affiliations
Karen Margaret Joos, Bascom Palmer Eye Institute/Univ. of Miami School of Medicine (United States)
Vanderbilt Univ. (United States)
Jin-Hui Shen, Bascom Palmer Eye Institute/Univ. of Miami School of Medicine (United States)
Vanderbilt Univ. (United States)
Brian K. Rivera, Bascom Palmer Eye Institute/Univ. of Miami School of Medicine (United States)
Eleut Hernandez, Bascom Palmer Eye Institute/Univ. of Miami School of Medicine (United States)
Debra J. Shetlar, Vanderbilt Univ. (United States)


Published in SPIE Proceedings Vol. 2393:
Ophthalmic Technologies V
Jean-Marie Parel; Qiushi Ren; Karen Margaret Joos, Editor(s)

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